In OS X, I want to change to a non-standard keyboard shortcut for switching spaces

In System Preferences > Expose and Spaces > Spaces Tab > to switch between spaces, there is a drop down list that allows you to select a modifier key and the arrows. The arrows are so far away from the rest of the keyboard! I want to bind to the vim keys (h, j, k, l) for (left, down, up, and right). On my Ubuntu machine, I push the equivalent of command-option-j to go down a space. Does anyone know how to change to a non-standard keyboard shortcut on OS X?

(I ran across a post that details how to change the modifiers, but still uses the arrow keys. This is not what I'm trying to do. Custom keyboard shortcuts to change active Spaces desktop)

Go to System Preferences -> Keyboard -> Keyboard Shortcuts. Then, on the left side, select Exposé & Spaces. On the right side you will see the current keyboard shortcuts for Exposé and Spaces. If you double click on the shortcut command (literally double click ^1 for instance) you will be able to change this to whatever you want. Just do the key-combo you want to use.

So, once you double-click on the shortcut, it'll show it as editable. Then, press the keys you want the short cut to be, all at once, for instance press Apple and J at the same time, and it'll change the shortcut.

I think matthepavkov has your answer, but also check out KeyRemap4MacBook for it's vi modes.